CN100471182C - Method and system of providing service of subsystem in IP multimedia for users in circuit switching domain - Google Patents
Method and system of providing service of subsystem in IP multimedia for users in circuit switching domain Download PDFInfo
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- CN100471182C CN100471182C CNB2006100584319A CN200610058431A CN100471182C CN 100471182 C CN100471182 C CN 100471182C CN B2006100584319 A CNB2006100584319 A CN B2006100584319A CN 200610058431 A CN200610058431 A CN 200610058431A CN 100471182 C CN100471182 C CN 100471182C
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Abstract
The method comprises: the first network device receiving the call signaling in the circuit switching domain triggers the call to connect to the second network device used for signaling switch; the second network device translates the call signaling of circuit switching domain into the signaling of IMS domain, and sends it to the application server for executing service logical in IMS domain; after the application server completes the service logical process, the call is directly transmitted to the second network device; the second network device translates the signaling of IMS domain into the signaling of circuit switching domain, and sends it to the first network device; the first network device makes the following routing steps for the call.
Description
Technical field
The present invention relates to the communication technology, relating in particular to circuit switching (CS) territory user provides IP Multimedia System (IMS) professional method and system.
Background technology
IMS is fused to target as Next Generation Telecommunication Networks network architectural framework so that multi-service to be provided, and is a kind of multiple services application architecture.In an IMS session, can relate to multiple medium, comprise speech and other medium types, but under present wireless IP access technology, the Quality of Service of the voice call of packet domain (PS territory) is difficult to obtain good assurance, therefore need will exist in a long time by the calling class service that the CS territory is supported.In this case, voice service need be subjected to the control of IMS could realize the business that voice data merges.
QoS guarantees in order to obtain preferably, and fused business must combine the calling control of circuit domain and the non-calling control business in IMS territory, by the fusion faculty at operation layer and terminal two ends, provides the business experience of fusion for the user.
On the one hand, in the CS territory, the triggering of IN service is based on the basic call model in addition, will call out according to various call states and be triggered to Service Control Function processing, SCF deploy miscellaneous service logic.Deployment along with IMS, customer service can progressively be moved to IMS, business on SCF progressively will no longer be that operator disposes professional emphasis, but CS user need use newly deployed business equally, and the business on IMS can be enriched gradually, so just need make CS user can use the business of IMS.
At present, in 3GPP, defined in IMS and carried (CSI) business, realized the control of IMS, provide fused business to the user to circuit domain by the MGCF (MGCF) that calling is travelled back across IMS in conjunction with CS.Consult shown in Figure 1ly, in the prior art scheme, realize that CS territory user inserts the IMS territory, then all mobile switching centres (MSC) all need to set up speech channel with MGCF/MGW in the CS territory.But this scheme needs the calling of all circuit domain is all set up circuit to MGCF, and route is circuitous serious, has wasted a large amount of circuit resources.
Summary of the invention
The invention provides a kind ofly provides the method for IMS business to the circuit commutative field user, has in the prior art to solve that the speech channel route is circuitous seriously and thus to cause wasting the circuit problem of resource.
The invention provides following technical scheme:
A kind of method that provides the IMS business to the circuit commutative field user comprises the steps:
Mobile switching centre in the circuit commutative field is triggered to transfer gateway with calling after receiving call signaling;
Signaling and relevant parameter that described transfer gateway is mapped as the IMS territory with the call signaling and the relevant parameter of circuit commutative field, and directly send to the application server of carrying out service logic in the IMS territory;
Described application server is finished will call out after the business logic processing and is directly sent to described transfer gateway;
Signaling and the relevant parameter that described transfer gateway is mapped as circuit commutative field with the signaling and the relevant parameter in IMS territory also sends to described mobile switching centre, by this mobile switching centre follow-up route carried out in calling.
After described transfer gateway received the call signaling that application server sends, further the network equipment in the indicating circuit switching domain of requiring according to service logic in the call signaling used the media resource of ip intelligent peripherals.
A kind of network equipment of changing signaling comprises:
First physical interface receives and transtation mission circuit switching domain signaling;
Second physical interface receives and sends the IMS domain signaling;
The signaling converting unit is used for signaling and relevant parameter that signaling and relevant parameter with circuit commutative field are mapped as the IMS territory, perhaps signaling and the relevant parameter that the signaling and the relevant parameter in IMS territory is mapped as circuit commutative field;
First Signaling Processing Unit, resolve the circuit switching domain signaling and the relevant parameter of the output of first physical interface, and be sent to described signaling converting unit, or encapsulate the circuit switching domain signaling and the relevant parameter of described signaling converting unit output and be sent to first physical interface;
Second Signaling Processing Unit is resolved the IMS domain signaling and the relevant parameter of the output of second physical interface, and is sent to described signaling converting unit, or encapsulates the IMS domain signaling and the relevant parameter of signaling converting unit output and be sent to second physical interface.
Described first physical interface is CAP or Intelligent Network Application Protocol interface; Or/and described second physical interface is an ISC interface.
A kind of communication system comprises: circuit commutative field and IMS territory, and described circuit commutative field has the mobile switching centre of routing call, and described IMS territory has the application server of carrying out service logic; This communication system also comprises:
Transfer gateway, be connected with application server in the IMS territory with mobile switching centre in the circuit commutative field, the circuit domain call signaling that is used for that described mobile switching centre is sent is converted to the signaling in IMS territory and is routed directly to described application server, and the signaling in the IMS territory that application server is sent is converted to the circuit switching domain signaling, and is routed directly to mobile switching centre.
Described transfer gateway and mobile switching centre are separate physical entity, perhaps are same physical entity.
Beneficial effect of the present invention is as follows:
1, the present invention only with the application server AS of signalling route to the IMS territory, is not routed to the IMS territory with speech channel, thereby can not produce the circuitous of speech channel, can reduce taking Internet resources.
2, adopt the present invention to make CS user can use the IMS business, can avoid the problem of a professional while, thereby can significantly save operation cost in IMS territory and the deployment of CS territory.
When 3, the present invention uses the IMS business for CS user, also strengthened the bearing capacity of IMS, used application server just can use PS carrying and CS to be carried as the user simultaneously service is provided.
Description of drawings
Fig. 1 is the networking communication system schematic diagram that CS territory and IMS territory constitute in the prior art;
Fig. 2 is a networking communication system schematic diagram in the embodiment of the invention;
Fig. 3 is the structural representation of signal converter in the embodiment of the invention;
Fig. 4 is for providing the flow chart of IMS business for CS territory user in the embodiment of the invention.
Embodiment
Consult shown in Figure 2ly, the communication system in the present embodiment also comprises a transfer gateway (Convert GW) 20 except the conventional network equipment that comprises CS territory and IMS territory.Transfer gateway 20 respectively with the CS territory in moving exchanging center MSC 21 (service switching point) link to each other with application server AS 22 in the IMS territory, be used for the signaling in CS territory is converted to the signaling in IMS territory, and the signaling in IMS territory is converted to signaling in the CS territory, if comprise relevant parameter in the signaling, also further change relevant parameter.
The mobile switching centre 21 in CS territory triggers the business triggering mode of service control point (SCP) (as be triggered to) according to the existing mode in CS territory, communicate by letter with transfer gateway by CAMEL Application Part (CAP) signaling, transfer gateway 20 is realized the conversion of CAMEL Application Part to session initiation protocol (SIP), and manages whole calling procedure according to the needs of business.For mobile switching centre 21, can regard transfer gateway 20 as Service Control Point.
(1) supports CAP and SIP signaling, support ISC (interface that defines between CSCF and the SIP AS) interface of 3GPP definition.
(2) can realize the associate management of CAP and SIP signaling, various CAP trigger point and incident be become sip message according to the logical transition that configures at GW, and realize various parameter maps.
(3) the requirement indication SSP (MSC) according to the partial service logic uses ip intelligent peripherals (IntelligentPeripheral, media resource IP).
In concrete enforcement, transfer gateway 20 can be used as independently physical entity, also can be integrated in the MSC/MSC Server equipment, provides ISC interface from the MSC Server of GSM MSC or UMTS, by the AS intercommunication of this ISC interface and IMS, realize above-mentioned functions.
Consult shown in Figure 3ly, the transfer gateway 20 in the present embodiment comprises: physical interface 200 and physical interface 210, signaling converting unit 220, Signaling Processing Unit 230 and Signaling Processing Unit 240.
The mobile switching centre 21 that physical interface 200 connects in the CS territory is used for receiving the CS signaling from mobile switching centre 21, and sends the CS domain signaling to mobile switching centre 21;
The application server 22 that physical interface 210 connects in the IMS territory is used for receiving the SIP signaling and sending the SIP signaling to application server 22 from application server 22;
Signaling converting unit 220 is used for signaling and relevant parameter that signaling and relevant parameter with circuit commutative field are mapped as the IMS territory, and signaling and relevant parameter that the signaling and the relevant parameter in IMS territory is mapped as circuit commutative field;
Signaling Processing Unit 240 is connected with signaling converting unit 220 with physical interface 210 respectively, be used to resolve the IMS domain signaling and the relevant parameter of physical interface 21O output, and be sent to signaling converting unit 220, and encapsulate the IMS domain signaling and the relevant parameter of signaling converting unit 220 outputs and be sent to physical interface 210.
Signaling converting unit 220 realizes that conversion includes but not limited to: SIP method and the corresponding CAMELT-BCSM DPs of response, SIP method and the corresponding CAMEL O-BCSM DP of response.
The conversion of SIP method and response and corresponding CAMEL T-BCSM DPs as shown in Table 1; The conversion of SIP method and response and corresponding CAMEL O-BCSM DP as shown in Table 2.
Table one
| DP (Detection Points test point) | Corresponding SIP method and response | Describe |
| DP Terminating_Attempt_ _ Authorised | INVITE | T-CSI is analyzed in indication |
| DP T_Busy | 4XX (except 401,407,408,480), 5xx, and 6xx (except 603) | Detect and receive Called Busy.Detect called unreachable. |
| DP T_No_Answer | 603 Decline, 408 Request Timeout, 480 Temp Unavailable | Detect the called no response timer expiry of using appointment. |
| DP T_Answer | 200 OK | Detect called acceptance and answering call |
| DP T_Disconnect | BYE | Detect taking out stitches from caller or callee side initiation. |
| DPT_Abandon | CANCEL | Detecting in conversation procedure calling and called one side initiates to take out stitches. |
Table two
| Test point | Corresponding SIP method and response | Describe |
| DP Collected_Info | INVITE | Detect the number or the number length that meet prerequisite |
| DP Analysed_Information | N/A | |
| DP Route_Select_Failure | 4XX (except 401,407,408,480,486), 5xx, and 6xx (except 600,603) | Detect and meet the failure cause code that presets |
| DP O_Busy | 486 Busy Here, 600 Busy Everywhere | Detect Called Busy and detect called unreachable IE in isup message |
| DP O_No_Answer | 603 Decline, 408 Request Timeout, 480 Temp Unavailable | Detect the no response timer expiry that presets.Detect the called no answer message in isup message |
| DP O_Answer | 200 OK | Detect called party answer |
| DP O_Disconnect | BYE | Detect from caller or called calling and discharge. |
| DP O_Abnndon | CANCEL | Detect at call setup and carry out caller release in the process. |
With calling subscriber is circuit domain user, and called is IMS user, and calling and called all are example at the intelligent routing service that uses SIP AS to provide, the handling process that provides the IMS business to CS territory user as shown in Figure 4:
The user in step 400, CS territory initiates a calling.
Step 404, transfer gateway 20 convert sip message to CAP message again according to transformation rule, send to mobile switching centre 21.
Finish the business logic processing of callee side at SIP AS, then, SIP AS returns the call signaling route to CSCF, and follow-up handshaking procedure is finished in CSCF control; After The Calling Party Hooks On, finish the dispose procedure of whole calling.This handles identical with existing processing, repeats no more.
In above-mentioned steps 402, the main process of conversion signaling comprises: resolve the CAP signaling and obtain relevant parameter; The inquiry signaling mapping table is mapped as CAP signaling and relevant parameter the SIP signaling and the relevant parameter in IMS territory; SIP signaling and relevant parameter after the encapsulation mapping.
In above-mentioned steps 404, the main process that sip message is converted to the CAP signaling comprises: resolve sip message and obtain relevant parameter; The inquiry signaling mapping table is mapped as CAP signaling and relevant parameter with sip message and relevant parameter; CAP signaling and relevant parameter after the encapsulation mapping.
In above-mentioned steps 404, transfer gateway 20 also can be according to the requirement of service logic in the call signaling, and indication mobile switching centre 21 uses the media resource of ip intelligent peripherals.
Among Fig. 4, between step 402 and the step 403 in transfer gateway 20 and the mutual signaling of MSC and function of finishing and the prior art function mutual and that finish between SCP and the MSC identical.
For callee side calling is triggered to the processing procedure in IMS territory and Calling Side in like manner, repeats no more.
For the IN service agreement in other CS territories, as Intelligent Network Application Protocol, also can pass through said method, convert thereof into the sip message of ISC interface and directly be triggered to SIP AS to realize the using IMS business, the purpose of fused business is provided for the end user.
By in network, increasing transfer gateway, realize conversion, the management of CAP to SIP, make the SIP-AS of IMS use Session Initiation Protocol, just can make full use of the professional ability in CS territory and IMS territory, thereby realize fused business.Promptly utilize the advantage of CS voice-over business, utilized the abundant multimedia service ability of IMS again.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1, a kind ofly provides the method for IMS business, it is characterized in that, comprise the steps: to the circuit commutative field user
Mobile switching centre in the circuit commutative field is triggered to transfer gateway with calling after receiving call signaling;
Described transfer gateway is converted to the signaling in IMS territory with the call signaling of circuit commutative field, and directly sends to the application server of carrying out service logic in the IMS territory;
Described application server is finished will call out after the business logic processing and is directly sent to described transfer gateway;
Described transfer gateway is converted to the signaling in IMS territory the signaling of circuit commutative field and sends to described mobile switching centre, by this mobile switching centre follow-up route is carried out in calling.
2, the method for claim 1 is characterized in that, the signaling that the call signaling of circuit commutative field is converted to the IMS territory comprises the steps:
The call signaling of parser circuitry switching domain also obtains relevant parameter;
According to signaling mapping table, signaling and relevant parameter that the signaling and the relevant parameter of circuit commutative field is mapped as the IMS territory;
Signaling and relevant parameter after the encapsulation mapping.
3, the method for claim 1 is characterized in that, the signaling that the signaling in IMS territory is converted to circuit commutative field comprises the steps:
Resolve the signaling in IMS territory and obtain relevant parameter;
According to signaling mapping table, call signaling and relevant parameter that the signaling and the relevant parameter in IMS territory is mapped as circuit commutative field;
Signaling and relevant parameter after the encapsulation mapping.
4, as claim 1,2 or 3 described methods, it is characterized in that, after described transfer gateway received the call signaling that application server sends, further the network equipment in the indicating circuit switching domain of requiring according to service logic in the call signaling used the media resource of ip intelligent peripherals.
5, a kind of network equipment of changing signaling comprises:
First physical interface receives and transtation mission circuit switching domain signaling;
Second physical interface receives and sends the IMS domain signaling;
The signaling converting unit is used for signaling and relevant parameter that signaling and relevant parameter with circuit commutative field are mapped as the IMS territory, perhaps signaling and the relevant parameter that the signaling and the relevant parameter in IMS territory is mapped as circuit commutative field;
First Signaling Processing Unit, resolve the circuit switching domain signaling and the relevant parameter of the output of first physical interface, and be sent to described signaling converting unit, or encapsulate the circuit switching domain signaling and the relevant parameter of described signaling converting unit output and be sent to first physical interface;
Second Signaling Processing Unit is resolved the IMS domain signaling and the relevant parameter of the output of second physical interface, and is sent to described signaling converting unit, or encapsulates the IMS domain signaling and the relevant parameter of signaling converting unit output and be sent to second physical interface.
6, the network equipment as claimed in claim 5 is characterized in that, described first physical interface is CAP or Intelligent Network Application Protocol interface; Or/and described second physical interface is an ISC interface.
7, a kind of communication system comprises: circuit commutative field and IMS territory, and described circuit commutative field has the mobile switching centre of routing call, and described IMS territory has the application server of carrying out service logic; It is characterized in that this communication system also comprises:
Transfer gateway, be connected with application server in the IMS territory with mobile switching centre in the circuit commutative field, the circuit domain call signaling that is used for that described mobile switching centre is sent is converted to the signaling in IMS territory and is routed directly to described application server, and the signaling in the IMS territory that application server is sent is converted to the circuit switching domain signaling, and is routed directly to mobile switching centre.
8, communication system as claimed in claim 7 is characterized in that, described transfer gateway comprises:
First physical interface receives and transtation mission circuit switching domain signaling;
Second physical interface receives and sends the IMS domain signaling;
The signaling converting unit is used for signaling and relevant parameter that signaling and relevant parameter with circuit commutative field are mapped as the IMS territory, perhaps signaling and the relevant parameter that the signaling and the relevant parameter in IMS territory is mapped as circuit commutative field;
First Signaling Processing Unit, resolve the circuit switching domain signaling and the relevant parameter of the output of first physical interface, and be sent to described signaling converting unit, or encapsulate the circuit switching domain signaling and the relevant parameter of described signaling converting unit output and be sent to first physical interface;
Second Signaling Processing Unit is resolved the IMS domain signaling and the relevant parameter of the output of second physical interface, and is sent to described signaling converting unit, or encapsulates the IMS domain signaling and the relevant parameter of signaling converting unit output and be sent to second physical interface.
9, communication system as claimed in claim 8 is characterized in that, described first physical interface is CAP or Intelligent Network Application Protocol interface; And/or described second physical interface is an ISC interface.
10, communication system as claimed in claim 9 is characterized in that, described transfer gateway and mobile switching centre are separate physical entity, perhaps is same physical entity.
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| CNB2006100584319A CN100471182C (en) | 2006-03-24 | 2006-03-24 | Method and system of providing service of subsystem in IP multimedia for users in circuit switching domain |
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| CNB2006100584319A CN100471182C (en) | 2006-03-24 | 2006-03-24 | Method and system of providing service of subsystem in IP multimedia for users in circuit switching domain |
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| CN100471182C true CN100471182C (en) | 2009-03-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8279832B2 (en) | 2007-09-30 | 2012-10-02 | Huawei Technologies Co., Ltd. | Method, system and device for converting session control signaling |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047628A (en) * | 2006-03-30 | 2007-10-03 | 华为技术有限公司 | System and method for implementing block service of circuit field terminal access packet network |
| CN101242634B (en) * | 2007-02-07 | 2012-05-23 | 华为技术有限公司 | Service providing system, device and method |
| CN104254143A (en) * | 2013-06-26 | 2014-12-31 | 华为技术有限公司 | Method, device and system for realizing sound playback and number receiving |
| CN111371724B (en) * | 2018-12-25 | 2022-05-17 | 中国电信股份有限公司 | Communication system, equipment and method for realizing IMS service |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8279832B2 (en) | 2007-09-30 | 2012-10-02 | Huawei Technologies Co., Ltd. | Method, system and device for converting session control signaling |
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